package br.com.util;

import br.com.vendas.HibernateUtil;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import org.hibernate.SessionFactory;

/**
 *
 * @author MCR11
 */
public class ConexaoHibernateFilter implements Filter {

    private SessionFactory sessionFactory;

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        this.sessionFactory = HibernateUtil.getSession();
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        try {
            this.sessionFactory.getCurrentSession().beginTransaction();
            chain.doFilter(request, response);
            this.sessionFactory.getCurrentSession().getTransaction().commit();
            this.sessionFactory.close();
        } catch (Throwable e) {
            try {
                if(this.sessionFactory.getCurrentSession().getTransaction().isActive()){
                    this.sessionFactory.getCurrentSession().getTransaction().rollback();
                }
            } catch (Throwable t) {
                t.printStackTrace();
            }
            throw new ServletException();
        }
    }

    @Override
    public void destroy() {
        
    }
}
